I read the manual about not to add the virtual host in postfix main.cf myhostname entry. But still can't understand what should I enter for
myhostname and mydomain?
For example I have: 10 domains ( domain1.tld domaind2.tld ... domain10.tld )
I entered in myhostname = domain1.tld, but it's wrong ?
Every domain has the virtual site for it.
Please explain how to configure myhostname properly what emails would work onlu for domain users, not for all system uzers.